CN106152980A - A kind of deformation of transformer winding detection method and system - Google Patents
A kind of deformation of transformer winding detection method and system Download PDFInfo
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- CN106152980A CN106152980A CN201610808222.5A CN201610808222A CN106152980A CN 106152980 A CN106152980 A CN 106152980A CN 201610808222 A CN201610808222 A CN 201610808222A CN 106152980 A CN106152980 A CN 106152980A
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- oil pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/24—Measuring arrangements characterised by the use of fluids for measuring the deformation in a solid
Abstract
nullThis application discloses a kind of deformation of transformer winding detection method and system，Winding oil pressure data after being broken down by acquisition transformator，And these data are carried out functional transformation，Obtain the harmonic component of oil pressure data after fault，Calculate after fault the ratio of the harmonic component of oil pressure data before oil pressure data harmonic component and fault，Obtain harmonic component Amplitude Ration，Amplitude Ration is judged，If exceeding threshold value，Then judge winding deformation，Visible，The application is after transformator breaks down，Utilize pressure transducer speed in prior art fast、The feature that precision is high and the scope of measurement is big，Quick and precisely obtain oil pressure data，Calculating process have employed functional transformation and harmonic component ratio，Reduce the error that oil pressure parameter itself is carried，Simultaneously also by decreasing the error in data that external influence factor causes，Add accuracy in detection，And transformator need not be shut down or shut down for a long time and just be can interpolate that whether winding deforms，Thus improve the operational efficiency of transformator.
Description
Technical field
The present invention relates to electrical equipment fault detection field, particularly to a kind of deformation of transformer winding detection method and be
System.
Background technology
The fast development of China's industry be unable to do without the electric power system of high efficient and reliable, and electric power system is in order to ensure high efficient and reliable
Power supply, the power equipment that breaks down is needed detection accurately, the especially transformator of electric power system.According to transformator event
The statistics of barrier, the winding deformation that short circuit in winding intensity deficiency causes account for more than the 60% of transformer fault.
In prior art, the detection mode of the winding deformation of transformator there is frequency response method, by measuring transformer frequency
Rate responds and compares its change and judges whether winding deforms, in addition with methods such as Low Voltage Impulse Method, short-circuit reactance methods, with top
It is out of service that method is required to transformator, and the test period is long, and on-the-spot interference is big, if it find that abnormal also needing to carries out hanging cover inspection
Look into, largely reduce transformator operational efficiency.
Therefore, how to reduce the time of transformator maintenance down, quickly winding is deformed into row judgement, thus improves transformation
Device operational efficiency is to be presently required to solve the technical problem that.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of deformation of transformer winding detection method and system, by obtaining
Take the winding oil pressure data after transformator breaks down, and these data are carried out functional transformation, obtain oil pressure data after fault
Harmonic component, calculates after fault the ratio of the harmonic component of oil pressure data before oil pressure data harmonic component and fault, obtains harmonic wave and divide
Amount Amplitude Ration, judging Amplitude Ration, if exceeding threshold value, then judging winding deformation, it is seen then that the present invention occurs event at transformator
After barrier, utilize the feature that in prior art, pressure transducer speed is fast, precision is high and measurement scope is big, quick and precisely obtain oil pressure
Data calculation process have employed functional transformation and harmonic component ratio, reduces the error that oil pressure parameter itself is carried, the most also
Decrease external influence factor, add accuracy in detection, and transformator need not be shut down or shut down for a long time and just be can interpolate that
Whether winding deforms, and improves the operational efficiency of transformator.Its concrete scheme is as follows:
A kind of deformation of transformer winding detection method, including:
After transformator breaks down, obtain the first oil pressure data of winding；
Described first oil pressure data are carried out functional transformation, obtains the described first corresponding harmonic component of oil pressure data；
Second oil pressure data of described winding are carried out described functional transformation, obtains described second oil pressure data the most humorous
Wave component, wherein, described second oil pressure data are described winding oil pressure data before described transformator breaks down；
Seek the ratio of the described first corresponding harmonic component of oil pressure data and the second corresponding harmonic component of oil pressure data,
To harmonic component Amplitude Ration；
Described harmonic component Amplitude Ration is judged, if described harmonic component Amplitude Ration exceedes first threshold, then sends
Winding damage alarm.
Preferably, described functional transformation is fast Fourier transform.
Preferably, the described first corresponding harmonic component of oil pressure data and the described second corresponding harmonic component of oil pressure data
It is second harmonic component.
Preferably, the first oil pressure data of described acquisition winding specifically include:
The oil pressure of described winding is monitored in real time, and after described transformator breaks down, obtains described winding
Described first oil pressure data.
Preferably, described detection method also includes:
Described second harmonic component Amplitude Ration is judged, if described second harmonic component Amplitude Ration is more than the second threshold
Value, and less than first threshold, then sending winding may alert in damage,
Wherein, described Second Threshold is less than described first threshold.
Preferably, described detection method also includes:
Described second harmonic component Amplitude Ration is judged, if described second harmonic component Amplitude Ration is less than the second threshold
Value, then proceed monitoring to described transformator oil pressure.
The invention also discloses a kind of deformation of transformer winding detecting system, including:
Oil pressure acquisition module, for after transformator breaks down, obtains the first oil pressure data of winding；
Functional transformation module, for described first oil pressure data and the second oil pressure data are carried out functional transformation, obtains institute
State the first corresponding harmonic component of oil pressure data and the described second corresponding harmonic component of oil pressure data, wherein, described second oil
Pressure data are described winding oil pressure data before described transformator breaks down；
Ratio calculation module, is used for asking the described first corresponding harmonic component of oil pressure data corresponding with the second oil pressure data
The ratio of harmonic component, obtains harmonic component Amplitude Ration；
Threshold value judgment module, for judging described harmonic component Amplitude Ration；
For described threshold value judgment module, first alarm modules, if judging that described harmonic component Amplitude Ration is more than the first threshold
Value, then send winding damage alarm.
Preferably, described functional transformation module includes:
Fast Fourier transform unit, for carrying out fast Fourier to described first oil pressure data and the second oil pressure data
Conversion, obtains the described first corresponding second harmonic component of oil pressure data and the described second corresponding second harmonic of oil pressure data divides
Amount.
Preferably, described oil pressure acquisition module includes:
Oil pressure monitoring means, for monitoring in real time the oil pressure of described winding.
Preferably, described detecting system also includes:
For described threshold value judgment module, second alarm modules, if judging that described harmonic component Amplitude Ration is more than the second threshold
Value, and less than first threshold, then sending winding may alert in damage,
Wherein, described Second Threshold is less than described first threshold.
The invention discloses a kind of deformation of transformer winding detection method and system, after being broken down by acquisition transformator
Winding oil pressure data, and these data are carried out functional transformation, obtain the harmonic component of oil pressure data after fault, after calculating fault
Before oil pressure data harmonic component and fault, the ratio of the harmonic component of oil pressure data, obtains harmonic component Amplitude Ration, enters Amplitude Ration
Row judges, if exceeding threshold value, then judges winding deformation, it is seen then that the present invention, after transformator breaks down, utilizes in prior art
The feature that pressure transducer speed is fast, precision is high and the scope of measurement is big, quick and precisely obtains oil pressure data, and takes these data
Functional transformation obtains harmonic component, by calculating the data before contrasting fault, obtains harmonic component Amplitude Ration, then enters Amplitude Ration
Row judges, if exceeding threshold value, then judges that winding deformation, process calculated as above have employed functional transformation and harmonic component ratio, fall
The error that low oil pressure parameter itself is carried, simultaneously also by decreasing the error in data that external influence factor causes, adds
Accuracy in detection, and transformator need not be shut down or shut down for a long time and just be can interpolate that whether winding deforms, thus improve change
The operational efficiency of depressor.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
Fig. 1 is a kind of deformation of transformer winding detection method flow chart disclosed in the embodiment of the present invention；
Fig. 2 is a kind of deformation of transformer winding detecting system structure chart disclosed in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The embodiment of the invention discloses a kind of deformation of transformer winding detection method, shown in Figure 1, including step S1-
S5, wherein:
Step S1: after transformator breaks down, obtains the first oil pressure data of winding.
In the embodiment of the present invention, the first oil pressure data obtaining winding can be real-time by reading winding upward pressure sensor
Data obtain, and now mean that transformator carries out deformation detection to winding after breaking down immediately.The most also can be taked other
Mode obtain above-mentioned first oil pressure data, such as the oil pressure data in read failure information record, now mean transformator
Break down and winding is carried out deformation detection after a period of time.
Step S2: above-mentioned first oil pressure data are carried out functional transformation, obtains the above-mentioned first corresponding harmonic wave of oil pressure data
Component.
In the embodiment of the present invention, the first oil pressure data obtained in step S1 are carried out functional transformation, be changed into corresponding
The data such as frequency domain, time domain, thus gradually lack the impact of other extrinsic factor, gradually to lack error.
It is understood that the first corresponding harmonic component of oil pressure data can be single number of times component, such as secondary is humorous
Wave component, third-harmonic component, can be the set of multiple number of times component, such as second harmonic component and third-harmonic component.
Step S3: the second oil pressure data of above-mentioned winding are carried out above-mentioned functional transformation, obtains above-mentioned second oil pressure data
Corresponding harmonic component, wherein, above-mentioned second oil pressure data are above-mentioned winding oil pressure before above-mentioned transformator breaks down
Data.
In the embodiment of the present invention, the source of the second oil pressure data can be the factory data of Transformer Winding oil pressure, it is possible to
To be when transformator normally works, by the pressure data of winding upward pressure sensor acquisition.
It is understood that the second corresponding harmonic component of oil pressure data can be single number of times component, such as secondary is humorous
Wave component, third-harmonic component, can be the set of multiple number of times component, such as second harmonic component and third-harmonic component.
It should be noted that step S2 and step S3 are without successively distinguishing, and the order that step S2 and step S3 are carried out is not
Affect result, i.e. step S2 and step S3 can carry out simultaneously, can also first carry out step S2 carry out again step S3, can also be first
Carry out step S3 and carry out step S2 again.
Step S4: ask the above-mentioned first corresponding harmonic component of oil pressure data and the second corresponding harmonic component of oil pressure data
Ratio, obtains harmonic component Amplitude Ration.
In the embodiment of the present invention, owing to the harmonic component data difference of different number of times components is relatively big, in order to improve calculating standard
Exactness, reduces error, obtains in the number of times component of the harmonic component of the first oil pressure data obtained in step S2 and step S3
The number of times component of the second corresponding harmonic component of oil pressure data is identical, and such as, the harmonic component of the first oil pressure data is that secondary is humorous
Wave component, then the second corresponding harmonic component of oil pressure data is also second harmonic component.
Step S5: above-mentioned harmonic component Amplitude Ration is judged, if above-mentioned harmonic component Amplitude Ration exceedes first threshold,
Then send winding damage alarm.
The invention discloses a kind of deformation of transformer winding detection method, the winding after being broken down by acquisition transformator
Oil pressure data, and these data are carried out functional transformation, obtain the harmonic component of oil pressure data after fault, calculate oil pressure number after fault
According to the ratio of the harmonic component of oil pressure data before harmonic component and fault, obtain harmonic component Amplitude Ration, Amplitude Ration judged,
If exceeding threshold value, then judge winding deformation, it is seen then that the present invention, after transformator breaks down, utilizes pressure in prior art to pass
The feature that sensor speed is fast, precision is high and the scope of measurement is big, quick and precisely obtains oil pressure data, and takes function to become these data
Get harmonic component in return, by calculating the data before contrasting fault, obtain harmonic component Amplitude Ration, then Amplitude Ration is sentenced
Disconnected, if exceeding threshold value, then judge that winding deformation, process calculated as above have employed functional transformation and harmonic component ratio, reduce
The error that oil pressure parameter itself is carried, simultaneously also by decreasing the error in data that external influence factor causes, adds detection
Accuracy, and transformator need not be shut down or shut down for a long time and just be can interpolate that whether winding deforms, thus improve transformator
Operational efficiency.
The embodiment of the invention discloses a kind of concrete deformation of transformer winding detection method, relative to a upper embodiment,
Technical scheme has been made further instruction and optimization by the present embodiment.Concrete:
In the embodiment of the present invention, the functional transformation in step S2 and step S3 is fast Fourier transform.
It is understood that according to the principle of Fourier transform, the sequential of any continuous measurement or signal, can represent
For the unlimited superposition of the sine wave signal of different frequency, and the multiplication that fast Fourier transform can reduce conversion calculates, thus
Accelerate the functional transformation process in step S2 and step S3, thus improve detection efficiency.
In the embodiment of the present invention, when the functional transformation in step S2 and step S3 uses fast Fourier transform, then step
The first corresponding harmonic component of oil pressure data in S2 and the second corresponding harmonic component of oil pressure data in step S3 are two
Order harmonic components.
It is understood that the data before having attenuation characteristic, and the corresponding conversion of triple-frequency harmonics due to harmonic component decline
Amount of decrease is spent greatly, and error is relatively big, in order to improve accuracy in computation, therefore uses second harmonic component.
In the embodiment of the present invention, in order to winding being deformed into row detection in real time, step S1 obtains the first oil pressure of winding
Data specifically include:
The oil pressure of above-mentioned winding is monitored in real time, and after described transformator breaks down, obtains above-mentioned winding
First oil pressure data.
In the embodiment of the present invention, harmonic component Amplitude Ration is judged also to include by step S5:
Above-mentioned second harmonic component Amplitude Ration is judged, if above-mentioned second harmonic component Amplitude Ration is more than the second threshold
Value, and less than first threshold, then sending winding may alert in damage,
Wherein, above-mentioned Second Threshold is less than above-mentioned first threshold.
In the embodiment of the present invention, detection method also includes:
Above-mentioned second harmonic component Amplitude Ration is judged, if above-mentioned second harmonic component Amplitude Ration is less than the second threshold
Value, then proceed monitoring to above-mentioned transformator oil pressure.
It should be noted that when the functional transformation in step S2 and step S3 uses fast Fourier transform, and harmonic wave divides
Amount is second harmonic component, and first threshold is preferably arranged to 200%, and Second Threshold is preferably arranged to 50%, now,
If second harmonic component Amplitude Ration is more than 200%, then send winding damage alarm；
If second harmonic component Amplitude Ration is more than 50% and less than 200%, then sending winding may damage warning；
If second harmonic component Amplitude Ration is less than 200%, then returns step S6, i.e. the oil pressure of above-mentioned winding is carried out in real time
Monitoring.
The invention also discloses a kind of deformation of transformer winding detecting system, shown in Figure 2, including oil pressure acquisition module
11, functional transformation module 12, ratio calculation module 13, threshold value judgment module 14 and the first alarm modules 15, wherein,
Oil pressure acquisition module 11, for after transformator breaks down, obtains the first oil pressure data of winding.
In the embodiment of the present invention, oil pressure acquisition module 11 can obtain by reading winding upward pressure sensor real time data
, now mean that transformator carries out deformation detection to winding after breaking down immediately.In addition oil pressure acquisition module 11 also may be used
The mode taking other obtains above-mentioned first oil pressure data, such as, read in the fault message record in System on Chip/SoC memory block
Oil pressure data, now mean transformator to break down after a period of time and winding are carried out deformation detection.
Functional transformation module 12, for above-mentioned first oil pressure data and the second oil pressure data are carried out functional transformation, obtains
The above-mentioned first corresponding harmonic component of oil pressure data and the above-mentioned second corresponding harmonic component of oil pressure data, wherein, above-mentioned second
Oil pressure data are above-mentioned winding oil pressure data before above-mentioned transformator breaks down.
It is understood that the first oil pressure data or the second corresponding harmonic component of oil pressure data can be that single number of times divides
Amount, such as second harmonic component, third-harmonic component can be the set of multiple number of times component, such as second harmonic component with
Third-harmonic component.
Ratio calculation module 13, is used for asking the above-mentioned first corresponding harmonic component of oil pressure data corresponding to the second oil pressure data
The ratio of harmonic component, obtain harmonic component Amplitude Ration.
In the embodiment of the present invention, owing to the harmonic component data difference of different number of times components is relatively big, in order to improve calculating standard
Exactness, reduces error, the number of times component of the harmonic component of the first oil pressure data and the second corresponding harmonic component of oil pressure data
Number of times component is identical, and such as, the harmonic component of the first oil pressure data is second harmonic component, then the second oil pressure data are corresponding
Harmonic component is also second harmonic component.
Threshold value judgment module 14, for judging above-mentioned harmonic component Amplitude Ration.
For above-mentioned threshold value judgment module 14, first alarm modules 15, if judging that above-mentioned harmonic component Amplitude Ration is more than first
Threshold value, then send winding damage alarm.
In the present embodiment, when threshold value judgment module judges that harmonic component Amplitude Ration exceedes first threshold, the first alarm modules
Support following alert methods: shown by word or icon, send winding by loudspeaker in the viewing area of display screen
Damage alarm, by light special sign winding damage signal lights.
The invention discloses a kind of deformation of transformer winding detecting system, including oil pressure acquisition module, functional transformation module,
Ratio calculation module, threshold value judgment module and the first alarm modules, after breaking down by oil pressure acquisition module acquisition transformator
Winding oil pressure data, after functional transformation module carries out functional transformation to these data, after obtaining fault, the harmonic wave of oil pressure data divides
Amount, ratio calculation module calculates after fault the ratio of the harmonic component of oil pressure data before oil pressure data harmonic component and fault, obtains
Harmonic component Amplitude Ration, Amplitude Ration is judged by threshold value judgment module, if exceeding threshold value, then the first alarm modules sends winding
Damage alarm, it is seen then that the present invention, after transformator breaks down, utilizes in prior art that pressure transducer speed is fast, precision is high
And the feature that the scope of measurement is big, quick and precisely obtain oil pressure data, and take functional transformation to obtain harmonic component these data, logical
Cross the data before calculating contrast fault, obtaining harmonic component Amplitude Ration, then Amplitude Ration is judged, if exceeding threshold value, then sentencing
Disconnected winding deformation, process calculated as above have employed functional transformation and harmonic component ratio, reduces what oil pressure parameter itself was carried
Error, simultaneously also by decreasing the error in data that external influence factor causes, adds accuracy in detection, and transformator without
Must shut down or long-time shutdown just can interpolate that whether winding deforms, thus improve the operational efficiency of transformator.
The embodiment of the invention also discloses a kind of concrete deformation of transformer winding detecting system, implement relative to upper one
Example, technical scheme has been made further instruction and optimization by the present embodiment.Concrete:
In the present embodiment, functional transformation module includes:
Fast Fourier transform unit, for carrying out fast Fourier to above-mentioned first oil pressure data and the second oil pressure data
Conversion, obtains the above-mentioned first corresponding second harmonic component of oil pressure data and the above-mentioned second corresponding second harmonic of oil pressure data divides
Amount.
It is understood that according to the principle of Fourier transform, the sequential of any continuous measurement or signal, can represent
For the unlimited superposition of the sine wave signal of different frequency, and the multiplication that fast Fourier transform can reduce conversion calculates, thus
Accelerate the functional transformation process of functional transformation module, thus improve detection efficiency.Simultaneously as harmonic component has decay spy
Property, and the data attenuation amplitude before the corresponding conversion of triple-frequency harmonics is excessive, error is relatively big, in order to improve accuracy in computation, therefore
Use second harmonic component.
Oil pressure acquisition module in the embodiment of the present invention includes:
Oil pressure monitoring means, for monitoring in real time the oil pressure of above-mentioned winding.
It is understood that oil pressure monitoring means can be located immediately at winding surface, it is also possible to be positioned at around assembly housing table
Face.Meanwhile, oil pressure detector unit specifically can be made up of multiple pressure sensing probes being evenly distributed on winding surface, respectively pops one's head in
The meansigma methods of acquired oil pressure is the oil pressure numerical value acquired in oil pressure monitoring means.
In order to explain in precise term winding deformation in detail, the embodiment of the present invention farther includes:
For above-mentioned threshold value judgment module, second alarm modules, if judging that above-mentioned harmonic component Amplitude Ration is more than the second threshold
Value, and less than first threshold, then sending winding may alert in damage,
Wherein, above-mentioned Second Threshold is less than above-mentioned first threshold.
In the present embodiment, when threshold value judgment module judges that harmonic component Amplitude Ration is more than Second Threshold, and less than the first threshold
Value, the second alarm modules following alert methods of support: shown by word or icon in the viewing area of display screen, lead to
Cross loudspeaker to send winding possible damage alarm, the signal lights of the possible damage of winding by lighting special sign.
It should be noted that when functional transformation module includes fast Fourier transform unit, i.e. to the first oil pressure data
Carrying out fast Fourier transform with the second oil pressure data, obtain corresponding second harmonic component, first threshold is preferably arranged to
200%, Second Threshold is preferably arranged to 50%, now,
If second harmonic component Amplitude Ration is more than 200%, then the first alarm modules sends winding damage alarm；
If second harmonic component Amplitude Ration is more than 50% and less than 200%, then the second alarm modules send winding can energy loss
Wound warning；
If second harmonic component Amplitude Ration is less than 200%, then the oil pressure monitoring means in oil pressure acquisition module continues opposing connection
The oil pressure of group is monitored in real time.
It is understood that the winding damage alarm that sends of the first alarm modules and the winding that sends of the second alarm modules can
Damage can alert, alarm can be given by same loudspeaker, and can show in same viewing area.
Finally, in addition it is also necessary to explanation, in this article, the relational terms of such as first and second or the like be used merely to by
One entity or operation separate with another entity or operating space, and not necessarily require or imply these entities or operation
Between exist any this reality relation or order.And, term " includes ", " comprising " or its any other variant meaning
Containing comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include that
A little key elements, but also include other key elements being not expressly set out, or also include for this process, method, article or
The key element that equipment is intrinsic.In the case of there is no more restriction, statement " including ... " key element limited, do not arrange
Except there is also other identical element in including the process of described key element, method, article or equipment.
Above a kind of deformation of transformer winding detection method provided by the present invention and system are described in detail, this
Applying specific case in literary composition to be set forth principle and the embodiment of the present invention, the explanation of above example is only intended to
Help to understand method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art, according to the think of of the present invention
Thinking, the most all will change, in sum, it is right that this specification content should not be construed as
The restriction of the present invention.
Claims (10)
1. a deformation of transformer winding detection method, it is characterised in that including:
After transformator breaks down, obtain the first oil pressure data of winding；
Described first oil pressure data are carried out functional transformation, obtains the described first corresponding harmonic component of oil pressure data；
Second oil pressure data of described winding are carried out described functional transformation, obtains the described second corresponding harmonic wave of oil pressure data and divide
Amount, wherein, described second oil pressure data are described winding oil pressure data before described transformator breaks down；
Ask the described first corresponding harmonic component of oil pressure data and the ratio of the second corresponding harmonic component of oil pressure data, obtain humorous
Wave component Amplitude Ration；
Described harmonic component Amplitude Ration is judged, if described harmonic component Amplitude Ration exceedes first threshold, then sends winding
Damage alarm.
Detection method the most according to claim 1, it is characterised in that described functional transformation is fast Fourier transform.
Detection method the most according to claim 2, it is characterised in that the described first corresponding harmonic component of oil pressure data and
The described second corresponding harmonic component of oil pressure data is second harmonic component.
Detection method the most according to claim 3, it is characterised in that the first oil pressure data of described acquisition winding are specifically wrapped
Include:
The oil pressure of described winding is monitored in real time, and after described transformator breaks down, obtains the described of described winding
First oil pressure data.
Detection method the most according to claim 4, it is characterised in that also include:
Described second harmonic component Amplitude Ration is judged, if described second harmonic component Amplitude Ration is more than Second Threshold, and
Less than first threshold, then sending winding may alert in damage,
Wherein, described Second Threshold is less than described first threshold.
Detection method the most according to claim 5, it is characterised in that also include:
Described second harmonic component Amplitude Ration is judged, if described second harmonic component Amplitude Ration is less than Second Threshold, then
Described transformator oil pressure is proceeded monitoring.
7. a deformation of transformer winding detecting system, it is characterised in that including:
Oil pressure acquisition module, for after transformator breaks down, obtains the first oil pressure data of winding；
Functional transformation module, for described first oil pressure data and the second oil pressure data are carried out functional transformation, obtains described the
The one corresponding harmonic component of oil pressure data and the described second corresponding harmonic component of oil pressure data, wherein, described second oil pressure number
According to for described winding oil pressure data before described transformator breaks down；
Ratio calculation module, is used for asking the described first corresponding harmonic component of oil pressure data and the second corresponding harmonic wave of oil pressure data
The ratio of component, obtains harmonic component Amplitude Ration；
Threshold value judgment module, for judging described harmonic component Amplitude Ration；
For described threshold value judgment module, first alarm modules, if judging that described harmonic component Amplitude Ration exceedes first threshold, then
Send winding damage alarm.
Detecting system the most according to claim 7, it is characterised in that described functional transformation module includes:
Fast Fourier transform unit, for carrying out fast Fourier change to described first oil pressure data and the second oil pressure data
Change, obtain the described first corresponding second harmonic component of oil pressure data and the described second corresponding second harmonic of oil pressure data divides
Amount.
Detecting system the most according to claim 8, it is characterised in that described oil pressure acquisition module includes:
Oil pressure monitoring means, for monitoring in real time the oil pressure of described winding.
Detecting system the most according to claim 9, it is characterised in that also include:
Second alarm modules, if judging that described harmonic component Amplitude Ration is more than Second Threshold for described threshold value judgment module, and
Less than first threshold, then sending winding may alert in damage,
Wherein, described Second Threshold is less than described first threshold.
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| CN111537919A (en) * | 2020-05-14 | 2020-08-14 | 莫毓昌 | Transformer fault diagnosis method based on voiceprint characteristics |
| CN112098906A (en) * | 2020-09-07 | 2020-12-18 | 淮南万泰电子股份有限公司 | Winding performance detection system of all-in-one machine |
| CN114485540A (en) * | 2022-01-20 | 2022-05-13 | 西安交通大学 | Method and system for rapidly acquiring deformation degree and position of transformer winding |
| CN115343663A (en) * | 2022-08-12 | 2022-11-15 | 保定天威顺达变压器有限公司 | Transformer winding monitoring device |
| CN117493760A (en) * | 2023-10-23 | 2024-02-02 | 华中科技大学 | Leakage current data cleaning method for resisting strong electromagnetic interference |
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| CN117493760A (en) * | 2023-10-23 | 2024-02-02 | 华中科技大学 | Leakage current data cleaning method for resisting strong electromagnetic interference |
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